When using very high bromide developers, it may be necessary to use a 200 to 250 watt light bulb in order to get good reversal effects. |
Lewis Latimer, the son of runaway slaves, became an electrical engineer and invented an inexpensive process for making light bulb filaments. |
It glimmers at barely 1800 degrees Fahrenheit, which is cooler than a light bulb filament. |
Don't embark on any ambitious DIY projects until you have seen how much mess he makes changing a light bulb. |
On August 26 he returned to his laboratory in New Jersey, and the following day began his experiments on his electric light bulb. |
You come out the other, and it's like a light bulb has flashed inside your head. |